Valve.



H. HITCHCOCK.

VALVE.

APPLICATION FILED MAR. zo, 1911.

, Lu Patented N0v.12,1912.

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UNITED STATES Param onirica.

HABLYN HITCHCOCK, or ATLANTA, GEORGIA.

V ILVE.

To all whom t'may concern:

Be it known that I, HARLYN HITCHCOCK, a citizen of the United States,residin at Atlanta, in the countyof `Fulton and tate of Georgia, haveinvented a certain new and useful Improvement in Valves, of which the`possible disturbance of the line of pi a stuii'lng box; the provisionof improved means'for maintaining fluid tight joints between the valveand seat and about the stem; and the provision of an indicating dewhichthe handle can be set so as to indicate correctly upon a scale or indexthe relative positions of the ports in the valve and valve 30 seat.

Generally speaking, the invention may be defined as consisting ofthecombination of elements' embodied in the claim's hereto annexed andillustrated in the drawings form-- ing part hereof, in which: l

Figurel is a vertical cross sectional view of one embodiment lof myimproved valve, showing the saine in open position; Fig. 2 is a to planView of the same; Fig'. v3 is a vertice cross sectional view .of a valvemade in accordance `with my invention and embodying a slightly modifiedvalve casing, the valve being illustrated in closed position; and Fig. 4represents a development'of the valve member.

Describing the parts by reference characters, 1 indicates the body orcasin of my improved valve, which is made in t e form of a T, havingalined threaded openings 2 and 3, and a. transversel extending pipeconnection 4.A In Fig. 1 t 1s connection is illustrated as formed withexternal threads adapted to receive a gland nut 5 by means of which aconnectingnipple 6 may be secured thereto. vThreaded into the opening 3is a bushing 7 ,having an internal lpipel rel Brpeetcation of LettersPatent. A'ppiieaaon mea umn 2o, 1911. 'serial m. 615,802.

vice of improved and simplified t e and in 'Patented Nov. i2, ieia.

ceiving thread 8 and an upwardly projecting truncated conical portion 9forming a valve seat and having in its side a port or opening 10. Thisbushing is preferably formed with an enlarged prismatic portion 1'1adapted to abut against the lower end ofthe casing 1, and the base ofthe conical portion is spaced inwardly from the wall of the casing so asto rovide a recess 12. The'port 10 is prefera ly arranged to comeopposite the transverse connection 4, although it is obvious Threadedinto the opening 2 is a bonnet 15, having a lateral iange 16 abuttingagainst the upper end of the casing 1, and

having an axial perforation 17 adapted to receive the valve stem. Thelower-,end of said bonnet. is hollowed out as at 18, defining a ratherabrupt shoulder 19.

The valve member proper comprises a hollow, truncated conical sleeve 20adapted to embrace closely the conical portion 9, and having in its sidea port 21 adapted to register with the port 10. The lower end of saidsleeve .is terminated slrort of the lower end of the conical portion 9as indicated at 22 and the smallest diameter of the interior of'saidsleeve is slightly less than the smallest diameter of the conicalportion. The

shown in Fig. 4 and comprisesY a substantially circular opening mergingwith a tapered or diminishing notch 23. The smaller end of said sleeveis formed with an iii- Vtegral cylindrical extension 24 having therein atransverse notch or slot-25, loosely receiving the flattened end 26 of avalve stem 27 which is loosely attached thereto by means of a pin orrivet 28 securedin the sides of the extension 24. The perforation lVthat the valve would be entirely operative with other arrangements ofthis port. l i

y port 21 is preferably formed of the shape Y 29 formed in the stem andthrough which the pin passes is made somewhat larger than the pin so asto permit a certain degree of universal movement vbetween the stem andvalve member.l Y

Carried within the enlarged hollowed-out portion of the bonnet andsurrounding the stem is a packing 30 of rubber, vegetable bers or othersuitable material, and said packing is forced against the shoulder 19 bymeans of a spiral spring 31 compressed' between a washer 32 mounted uponthe squared upper end of the valve member and a washer 33 engaging thepacking. It will thus be seen that said spring serves at the i jectingabove the seat, and upon this end is Open and Closed bein 39 thereofinto correct relation to t e 'same time to hold the valve membersecurely to its seat and to compress the packing tightly around thevalve stein.

The upper end of the bonnet is preferably vformed with a laterallyextending flange defining a' flat circular surface 36, which lsurface ispreferably lprovided 'with words or characters denoting the position ofthe .Valve withA respect to the seat, the words employed in thedrawings. The upper en of the stem is preferably, provided with aconical end prosecured a handle 37. Said handle is secured in adjustedposition upon the valve stem by meansof a screw 38 or other suitablemeans, and the conical shape ofthe stem permits the handle to beadjusted therearound so as to bring the indicatin linger ort and thevalve member. The osition o the handle u on the stem is furter assuredby means o the radial screw 40 which holds the wood or othernon-conducting hand piece 41 in place, and is provided with a conicalpoint 42 adapted to press against the side ofthe stem.

' In Fig. 3 I have illustrated a modification `of my valve in which thecasing consists of a simple T shaped. connection which may convenientlybe an ordinary malleable iron, stock T, the remaining parts being thesame as those illustrated in Fig. 1. The comparative freedom of thejoint between the valve member and the stem permits the relativemovement necessary to compensate for the difference indirection andalinement be-A tween the two ends of the T.

I consider my method of attaching the valve handle to-the stem asimportant because of the great difficulty, if not impossibility, ofmaking valves of this type in which the relation of the port 10andindicator plate 36 shall be uniform. Such uniformity would requirethe same length of screw threads in all cases and the starting lof saidscrew threads at the same points. May arrangement permits the handle tobe a xed to the stem so as to indicate accurately the relation of theport and the valve to each other. Attention is also called to the recess1'2 surrounding the valve seat i below the valve, and forming a Vocketinto casing having substantially alined threaded Y openings in the endsthereof and a'lateral pipe connection between said lends,a bushingthreaded into one of said openings and having a valve seat secured toits inner end, said valve seat having a port therethrough and saidbushing having a pipe/receivin opening, a valve member fitting againstsaid seat and havin a port therein adapted to register with said firstport, said valve member having an axial extension at one end concentricwith said casing, an apertured bonnet secured in the other of saidopenings, said bonnet memberbeing hollowed outat its lower end, a stemprojecting through said bonnet and connected to said extension, packingin said hollowed portion surrounding said stem, a washer-` surroundingsaid stem and bearing against said packing, a washer surrounding saidstem and seated against said extension, a spring compressed between saidwashers, and a handle secured to the outer end of said stem.

2. A valve comprising, in combination, a casing consisting of a standardpipe T having substantially alined threaded openings in the ends thereofand a lateralpipe connection between said ends, an externally threadedbushing secured in oneV of'said openings and having an inwardlyextending frusto-conical valve seat upon its inner en the largestdiameter of said conical portion being less than the internal diameterof the casing and said conical portion having a port in its side wall, afrusto-conical sleeve fitting over said seat and having itsendspaced-from the base of said seat, said sleeve having a port thereinadapted to register with said first port and having an axialprojection,an apertured bonnet member secured in the other of said openings, saidbonnet member being hollowed out at its lower end, a stem projectingthroughsaid bonnet and secured to said projection, packing in saidhollowed portion surroundin said stem, a washer bearing against saipacking, a washer seated on said extension,

a spring compressed between said washers,

and a Vhandle secured to the outer end of said stem. v

3. A valve comprising, in combination, a casing having substantiallyalined threaded openings in the ends thereof and a lateral pipeconnection between said ends, an externally threaded bushing secured inone of said openings and having an inwardly extending frusto-conicalvalve seat u on its inner end, the largest diameter of said conicalportion being lless than the internal diameter of the casing and saidconical portion having a port in its side wall, a frustol conical sleevefitting over said seat and having its end spaced from the base of saidseat, said sleeve having a port therein adapted to register With saidfirst port and having an axial slotted projection, an apertured bonnetmember secured in the other of said openings, said bonnet member beinghollowed out at its lower end, a stem projecting through said bonnet andhaving a flattened end received in said slot, means loosely retainingsaid stern in said slot, packing in said hollowed portions surroundingsaid stem, a Washer bearing against said packing, a washer seated onsaid extension, a spring compressed between said washers, and a handlesecured to the outer end of said stem.

4. A valve comprising, in combination, a casing having substantiallyalined threaded openings in the ends thereof and a lateral pipeconnection between said ends, a valve seat threaded into one of saidopenings and i having a port therethrough, a rotatable valve memberengaging said seat and having a port therein adapted to register withsaid first port, an aperturedbonnet member secured in the other of saidopenings, and having a flat upper end formed with indicatingdesignations on its surface, a stem secured to said valve member andprojecting through said bonnet and having a conical outer end, andahandle adapted to be secured in any angular 4position about said stem,said handle having an indicating finger to cooperate with saidindicating designations, and having a radial set screw carrying on itsshank a sleeve of non-conducting material and having a point adapted toengage the end of said stem.

In testimony whereof, I hereunto aiix my signature in the presence oftwo Witnesses.

, HARLYN HITCHCOCK. `Witnesses: l L

E. J. JACKSON, A. J. HANSLL.

